x=[440:447]
y=[13 12.5 11 10.4 9.6 8 8 7.9] 

xNext=x
xNext(1:7)=x(2:8)
xNext(8)=x(8)+1

yNext=y
yNext(1:7)=y(2:8)
yNext(8)=7

plot(xNext, yNext, '--rs')



